The number of 4 digit numbers that can be formed with 0,1,2,3,5 which are divisible by 2 or 5 is
A
84
B
60
C
120
D
53
Medium
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Updated on : 2022-09-05
Solution
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Correct option is B)
Considering 0,1,2,3,5 and non repetitions of digits. Number of four digit numbers divisible by 2 or 5 should contain 0,2 or 5 in the end of the number. →_ _ _ 5 Implies 4(3!) numbers. Now eliminating the numbers with 0 at the starting, we get 4(3!)−3! =3(3!) =18. ...(i)
Implies 4(3!) numbers. =24 ...(ii)
Implies 4(3!) Eliminating the numbers with 0 at the starting, we get 4(3!)−3! =3(3!) =18 ...(ii) Adding (i), (ii) and (iii), we get 18+24+18 =36+24 =60